Measuring device.



E. F. SRBNSEN. MEASURING DEVICE.

APPLICATION 'FILED MAY 26, 1910.

' Ptente'a 0001, 1912.

EINAnEoLKE sEENsEN, oEsTooKHomvi, SWEDEN.

MEASURING DEVICE.

Specification 0f Letters Patent.

Patented Oct. 1, 1912.

Application led May 26, 1910. i Serial No. 563,572.

To all whom 'it may concern: j

Be it known that I, EINAR FoLKE SREN- SEN, a subject of the King ofSweden, and' residing at Blasicholmstorg 11, Stockholm, in the Kingdomof Sweden, have invented certain new and useful Improvements inMeasuring Devices, of which the following is a specificatiomreferencebeing had therein to the accompanying drawings.

When cutting logs, deals, boards and the like of ditlerent lengths intoshorter pieces of fixed lengths, for instance, in the manufacture ofboxes, a great loss of wood is caused by the surplus end pieces, whenproceeding as hitherto. By cutting pieces of diierent lengthssimultaneously,for instance of two special lengths, and cutting such anumber of pieces of one of the said lengths or partly of one length and'partly of the other, that the added lengths of the same correspond asnearly asl possible with the length oi' the board, etc., withoutexceeding the same, the said loss will be reduced to a minimum. Thecalculation necessary for this purpose in cutting each log,board, etc.,however, requires a long time.

This invention relates to a measuring device, rom which canbe read oidirectly into which pieces the board, etc., may preferably be cut inorder that the loss-of material caused by surplus pieces may bereducedto a minimum.

The said measuring device consists of a measure provided with divisionlines and figures or with any other suitable marks representing theseries of different lengths and so made that it serves as a guide forthe said purpose, while the board, etc., is being cut. rIhe said seriesof diierent lengths may be indicated on a single piece 'of material oron a plurality of pieces used simultaneously, some examples being statedbelow.

The measuring device may be located onf the saw-bench and be made eitherstationary or movable, or be provided on the bench proper.

In the accompanying drawings, Figure l shows a part of a measuring rodor strip provided with the said series of different lengths indicatedthereon, and Fig. 2 shows two measuring rods to be used simultaneously,the said rods being shown on the saw-bench. Fig. 3 shows a device inwhich the reading off operation is made from signals, and 4L showsdetails of the device illustrated in Fig. 3.

The measuring rod A, shown in Fig. l, is adapted for use in cuttingboards, for instance, into pieces of two different lengths; A series-ofmarks from `the left end of the rod are, located at a distance from eachother equal to the shorter of the lengthsr into which the board is to becut. The said marks are designated by K", K', K2, K3, K4 and so on. Fromthe line K0, marks are located at a distance from each other equal tothe longer lengths into which the board is to be out. All the lines lastmentioned are designated by O. From the line K', also toward the right,marks r, 7c', la are located at the same distance from each other as thelines O just mentioned. In the same manner marks 7a2, 7a2, 7a2 areplaced from the line K2, located at the same disl tance from each otheras the lines O. Similar marks 7c3, 703, 7c3 are placed from the line K3and so on. 1When using the measure, which preferably is provided with ascale B corresponding to the scale oir' an ordinary meter-rule, it isplaced on the board, with the end, from which t-he series of lengths aremarked out, flush with the end of theiboard. At the other end of theboard that mark is then read oif, which is located nearest to that endof the board, inside the same. The said mark indicates how many piecesof the length equal to the distance KU-K are to be cut olii, in orderthat the smallest possible loss of material may be made, when the restof the board is cut into pieces equal to the distance O-O. If the lengthof the board is 390 centimeters, the line 704 indicates, that fourpieces of the length KO- I may be cut from the board, and the rest cutinto one piece of the length equal to O O. Thisy follows from the factthat ist, by the conditions named, is just the distance of O-O from K4and hence four pieces the length of KO-K will just correspond to thelength of board left after one piece O-O has been removed. If the lengthof the board is L50 centimeters, siX pieces of the length K0* i may becut from the same and so on. From any one of the lines at a distance of240 centimeters .from the end of the measuring rod, a distance of 45centimeters is marked out, the line marked out will correspond to alength of 285 centimeters. If the board has the said length or asomewhat greater length, the said figure will indicate that two piecesof the length KO-K must be cut from the board and that besides an endpiece of 45 centimeters can be obtained. If generally short boards,etc., are to be cut, a few of the graduations 7c, 7c 702, 7a2 fc3, 7c3may be sutcient, for instance only c, la and 7a2, 7a2 may be providedlon the rod. If pieces of more than two lengths are cut ott from theboards, etc., the

graduation is completed correspondingly. The figures or signs of eachseries of lengths are then preferably designated in a special manner,for instance by means of special colors.

As already stated, the series of different lengths may be provided ontwo measuring' rods. The said rods are provided preferably on the sawbench. One of the rods is made stationary and the other movable, asshown in F ig. 2, which is a side view of a saw bench. a is the sawbench and b is the saw-blade. A rod c extends longitudinally of the sawbench and is xed to the same. The said rod is divided into cert-ainlengths from the right end, which is flush with the saw blade. Anotherrod f also extends longitudinally of the saw bench but is located in aguide rod g in such manner that it can be moved forward and backwardlongitudinally. The rod f is divided into suitable lengths from its leftend. The rod c is provided with a plurality of movable pointers c',which can be located at the desired distances from each other, and therod f is provided with similar pointers f. Two stops 7L, z' of differentheinh@ are provided on the bench and movable longitudinally of the same.The lower stop 7L is adapted for the cutting of the board into shorterpieces, and the other stop vl is adapted for the cutting into longerpieces. lf, for instance, the board is to be cut into pieces of twodifferent lengths of 7 5 and 90 centimeters respectively, the pointersf, which are numbered, are xed on t-he rod f at the distances of 75,150, 225, 300, 375 centimeters respectively and so on from the left endof the rod, while the pointers c are fixed on the rod c at the distancesof 90, 180, 270, 360 centimeters respectively and so on from the rightend of the rod. The stops 7L and z' are fixed at the distances of 75 and90 centimeters respectively from the saw blade b.

The boards to be cut are placed on the saw bench in the same manner asthe board Z m, shown in F ig. 2, and are cut even at the ends. The rod fis moved in the meantime by an assistant toward the left, until its leftend is flush with the left end Z of the board. The operator now readsolf the number of that pointer of the rod f, which is located' nearestbehind one of the pointers of the stationary rod c with regard to thesaw-blade, consequently No. 4 in the case illustrated in Fig. 2. Theoperator therefore cuts 0H four pieces from the board having the lengthof 75 centimeters and cuts the rest of the board into pieces of a lengthof 90 centimeters, two such pieces being obtained. Only a very shortuseless surplus piece will then remain. If pieces of more than twolengths are to be cut olf, a distance corresponding to the third lengthmay be marked out from any pointer of one of the rods. A piececorresponding to the said distance will then be obtained at the cuttingoperation, in analogy with the above statements with regard to thesingle measuring rod, shown in Fig. l. Special scales for the third orfourth lengths may on the other hand be provided on one of the rods oron both the rods, which scales preferably are designated differently for.instance by different colors.

Instead of pointers, electric contacts or any other suitable means maybe provided for indicating how many pieces of the one length or theother are to be cut off, the said means being so arranged that theoperator can easily make the reading off operation at a comparativelygreat distance from the rod. Means of the said type are shown in Figs. 3and 4. a is a stationary rod and p a movable rod. The rod lnj isprovided with projections a', consisting of blocks fixed to the rod. Oneof the said blocks is located at the right end of the rod, the end ofthe block being flush with the saw-blade. The other blocks are locatedat distances from each other corresponding to one of the lengths to becut oil. Fig. 4 shows one of the blocks on a greater scale. The blockhas an abrupt offset a2, located near the right end n3 of the block.rlhe top side n4 of the block inclines backward from the saw-blade.Small levers p are pivoted to the rod p at distances from each other,starting from the left end of the rod, which correspond to the otherlength, into which the board is to be cut. Each of the said levers canswing around a horizontal pin p2 and the center of gravity of the leveris situated below the said pin, so that the lever always tends to occupya vertical position. The lever is so shaped that its top arm p7 has alateral direction, when the lever hangs freely on the pin, so that thesaid arm p7 is raised and located above the pin p2, as the lever isswung by the blocks as stated below. The rod p is located at such aheight above the rod u, that the lever p is swung in the said manner bythe lower end of the lever, formed to an edge or a point, striking, theinclined top side n* of the block and slides up the same, as the rod pis moved toward the right, Fig. 3. A rod 294, parallel to the rod p andlocated above the levers p', is connected with the rod p by means ofarms p3, pivoted to the said rods, so that the rod p4 can be raised andlowered and in all positions is parallel to the rod p. Each lever p isconnected with an electric circuit and provided with a push button p5,which is located in the end ofthe arm p7 and when forced inward causesan electric incandescent lamp p6 to be lighted. The said lamps p6 arelocated on the rodp, above the levers respectively and numbered, asshown.

The board or the like to be cut into pieces is placed on the sawebenchand cut even at its end. The rod p is then moved to-\y ward the right,Fig. 3, until its left end is flush with the left end of the board. Thelever yy, the pin of which is located nearest behind one of the offsetsn2, has then been rotated through the greatest angle compared with theother levers p', and the end of its top arm p7 occupies a higherposit-ion than the ends of the other arms p7. The rod p4, supported bysprings or the like not shown,

is then lowered and forces the button of the said lever p inward, thecorresponding lamp being consequently lighted. From the number of thesaid lamp the operator can conclude how many pieces of the length markedon the rod p' are to be cut off in order that when the rest of the boardis cut to the length marked out on the stationary rod n, the remainingpart of the board may be as short `as possible.

It appears from the forms of execution shown in Figs. 2 to 4 inclusivethat the graduation as a whole represented, if necessary, by pointers,special signal devices and the like, must not necessarily be provided onone and the same rod or the like but may be divided into two rods or thelike.

What I claim is:

1. A measuring device for cutting material into pieces, comprising asuitable base, a plurality of seriesy of marks on the base, the marks inone series being placed at distances apart different from the marks ofanother series and a reading scalehaving a plurality of points of originat successive marks of one of the series of marks.

2. A measuring device for cutting material into pieces, comprising asuitable base, a plurality of series of marks on the base, the marks ofone series being located at distances apart diierent from the marks ofanother series, and differentiated therefrom, and a reading scalehavingv divisions corresponding to the distances of one of said seriesVof marks and indicators relating to the distances of another series.

In testimony whereof I have aiXed my signature in presence of twowitnesses.

EINAR FOLKE sRENsEN.

Witnesses NoRvALD NYsTnoM,

ROBERT APELGREN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

